CN102089494A - Sealing arrangement and sealing method - Google Patents
Sealing arrangement and sealing method Download PDFInfo
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- CN102089494A CN102089494A CN2009801272195A CN200980127219A CN102089494A CN 102089494 A CN102089494 A CN 102089494A CN 2009801272195 A CN2009801272195 A CN 2009801272195A CN 200980127219 A CN200980127219 A CN 200980127219A CN 102089494 A CN102089494 A CN 102089494A
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- sealing device
- compound
- sleeve pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 18
- 239000000203 mixture Substances 0.000 claims abstract description 99
- 238000004519 manufacturing process Methods 0.000 claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 150000001875 compounds Chemical class 0.000 claims description 52
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000000696 magnetic material Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 208000034189 Sclerosis Diseases 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- -1 siloxanes Chemical class 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229920005594 polymer fiber Polymers 0.000 claims description 5
- 239000004848 polyfunctional curative Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920003051 synthetic elastomer Polymers 0.000 claims description 3
- 239000005061 synthetic rubber Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 18
- 239000012530 fluid Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002131 composite material Substances 0.000 description 4
- 239000007972 injectable composition Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- 229920006169 Perfluoroelastomer Polymers 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229950010118 cellacefate Drugs 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Sealing Material Composition (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a sealing arrangement (100) for sealing a leak (21) in a casing (2) or for sealing off a production zone (1) where the casing having a circumference and perforations (3) is situated in a borehole (22) downhole, but with a distance to an inner wall of the borehole, creating an intervening space (4) there between. The sealing arrangement comprises a composition (5) for injection into the intervening space or into a leak in the casing, and a non-miscible net comprised in the composition after injection in order to fixate the injected composition in a predetermined position.
Description
Technical field
The present invention relates to a kind of sealing device that is used for the leakage portion of Sealed casing pipe or is used for the shutoff production area, the sleeve pipe that wherein has circumference and perforation is arranged in well, but with the inwall of well at a distance of certain distance, thereby between them, form intermediate space.In addition, the invention still further relates to a kind of encapsulating method.
Background technology
Be provided with sleeve pipe in the well in the stratum, be mainly used in and prevent that well from collapsing and spoil.Well can have many sleeve pipes that are positioned at each other, and production casing is positioned partially in the intermediate casing, and this intermediate casing is positioned at surperficial sleeve pipe and conduit again.Conduit is bonded to the stratum, and surperficial sleeve pipe and intermediate casing are bonded in the conduit.
In some cases, production casing is fixed in the intermediate casing by packer, and leaves open space between production casing and intermediate casing.When recovering the oil, as safety precaution, the interior pressure in open space and production casing must be more or less the same each other respectively.If pressure reduction is too high, then may insert a packer so that the space minimum by more close surface.But insert the operation that packer may be a difficulty in this stage.
After production casing has been placed in the well, this production casing subsequently some have oil zone (so-called production area) in be perforated.Then, flow of oil can enter production casing and begin and recover the oil.During the oil recovery stage and since when reserve is adopted sky the oil-containing zone transferable, so flow of oil can with water and milkization.
If shift in the oil-containing zone, then must in production casing, make new perforation, and the perforation before the shutoff.For the perforation before the shutoff, in production casing before, insert new production casing, and packer is placed on these regional both sides.Subsequently, in new production casing, make new perforation.
In the production casing before new production casing is inserted, productivity ratio increases owing to friction effect and significantly reduces, and the reduction of speed has produced various relevant issues.
The other method of shutoff water zone is to insert cement plug above this zone, to be used to stop up following sleeve pipe.Subsequently, in the new region that oil is arranged above cement plug production casing is bored a hole.Thus, following sleeve pipe cuts out more muchly, and under the situation of not inserting new production casing, restarting to produce in the production casing below stopper is very difficult (if being not impossible).
Another kind method is at US 3,967, and is open in 681, wherein before cement, spray gellable polymer, thereby allow gellable polymer gel,, and stop wellbore fluid to force cement subsequently to leave the position that it need harden so that it is slack-off that wellbore fluid is flowed downward.This method requires first step to insert guard ring below perforation, and second step is inserted packer above treating by the perforation of shutoff, and these two steps are difficulty, complicated and expensive all.
In another case, production casing has the sealed leakage portion that needs.A kind of well-known solution is to make bushing pipe in the inner expansion of production casing, and this causes producing some uneven surfaces in sleeve pipe, and what influence was oily flows.
Summary of the invention
An aspect of of the present present invention be overcome the shortcoming of the known solution that is used for shutoff leakage portion, perforation or production area at least in part or make production casing and intermediate casing between open space minimize.
As will be conspicuous from following description institute, a kind of improved solution has been proposed, described solution can obtain by leakage portion that is used for Sealed casing pipe or the sealing device that is used for the shutoff production area, the sleeve pipe that wherein has circumference and perforation is arranged in well, but with the inwall of well at a distance of certain distance, thereby form intermediate space between them, above-mentioned sealing device comprises:
-be used for injecting intermediate space or sprue bushing leakage portion composition (composition) and
-soluble net, this net is included in after injection in the described composition, so that injected composition is fixed in the precalculated position.
Described net can be net grid, gauze wire cloth, wire gauze, mesh, knitmesh, grid, grid or aperture plate.
In one embodiment, described net can spray before described composition or with described composition simultaneously.
In addition, described net can be used as elongated member and sprays simultaneously before described composition or with described composition, and described elongated member for example forms the rope or the line of net grid, gauze wire cloth, wire gauze, mesh, knitmesh, grid, grid or aperture plate after ejection.
Described net can be made by wire, polymer line, polymer fiber, carbon fiber, glass fiber, wire or the similar elongated member of wire, coiling.
In another embodiment, described net can be made by magnetic material.
Described net can be made by the element that is pasted together and forms thus mesh or net in described composition.
And each element all can be made by magnetic material.
In one embodiment, described net can be made by some elements, and described element is pasted together in described composition, and forms mesh or net thus in described composition.
In addition, each element all can be made by magnetic material.
The invention still further relates to a kind of sealing device, the sealing device is used for the leakage portion of Sealed casing pipe or is used for the shutoff production area, the sleeve pipe that wherein has circumference and perforation is arranged in well, but with the inwall of well at a distance of certain distance, thereby form intermediate space between them, above-mentioned sealing device comprises:
-be used for injecting intermediate space or sprue bushing leakage portion composition and
-in described composition, be pasted together and in described composition, form thus the unit of mesh or net between hardening period at injected composition, wherein each unit all has the core that is encapsulated in the compound (compound).
In one embodiment, each independently all can have intermediate material between core and the compound that centers in the unit.
In addition, core or intermediate material can be made by pottery, metal, polymer fiber, glass fiber or the magnetic material that unit independently is pasted together.
Described composition can comprise compound.
In one embodiment, described compound can comprise cement, polymer, synthetic rubber, natural rubber or siloxanes.
In addition, described compound can comprise curing compound, adhesive, hardener or accelerator.
The invention still further relates to a kind of encapsulating method, the sealing method is used for sealing leak portion or production area, perhaps is used to make the open space between production casing and intermediate casing of packer top to minimize, and said method comprising the steps of:
-injection one compound,
-in described compound, form soluble net, so that the compound of injection is fixed in the precalculated position.
In one embodiment, described net can be discharged before injecting step or with injecting step simultaneously, and is injected into when surrounding this net at least in part at the compound internal shaping when compound.
In another embodiment, the described net element or the unit that can be pasted together in described composition by sclerosis or the setting up period at described compound or described composition forms.
At last, the invention still further relates to a kind of downhole tool, this downhole tool comprises a Room, and described chamber comprises aforesaid sealing device.
Description of drawings
Describe the present invention with reference to the accompanying drawings in detail, wherein:
Fig. 1 illustrate have production casing, the sectional view in the well of intermediate casing, surperficial sleeve pipe and conduit,
Fig. 2 illustrates the sectional view in the well, and the sleeve pipe that wherein has leakage portion is positioned at well,
Fig. 3 illustrates the partial section of perforation sleeve pipe, and wherein each perforation all seals with sealing device,
Fig. 4 illustrates the sectional view of blocked sleeve pipe,
Fig. 5 illustrates the sectional view of the sleeve pipe of the Fig. 2 with sealing device, and described sealing device comprises the wire of the coiling that is used for sealing leak portion,
Fig. 6 illustrates the sectional view of sleeve pipe of the Fig. 2 of the embodiment with sealing device, and described sealing device comprises pastes pearl or ball,
Fig. 7 illustrates the sectional view of sleeve pipe of the Fig. 2 of another embodiment with sealing device, and described sealing device comprises fiber,
Fig. 8 illustrates the sectional view of sleeve pipe of the Fig. 2 of another embodiment with sealing device, described sealing device comprise grid and
Fig. 9 illustrates and comprises the independently sectional view of combination of elements thing.
Each accompanying drawing only illustrates for illustrative purposes schematically and for example.
The specific embodiment
The present invention relates to a kind of sealing device 100, sealing device 100 comprises composition 5 and soluble net 30, when described soluble net 30 is used for around composition 5 is fastened to net 30 composition 5 is fixed on the precalculated position.Usually, composition 5 is injected in the well that comprises high-pressure fluid, therefore needs described net to block this high-pressure fluid, thereby described composition is hardened if having time.
Described composition can be composite form or is the form of unit independently.When composition 5 was composite form, this compound was injected with its liquid phase, and when compound hardened, this compound must be maintained at location, a certain position, and this finishes by net 30.Therefore, described net is used to stop compound to go out from leakage portion.
In one embodiment, composition 5 was melted before by injection, and sclerosis/curing by injection the time.In another embodiment, composition 5 comprises that with its liquid form or the essential part of partially liq form at least, this essential part was being mixed with another part such as hardener before by injection, so that make the compound sclerosis.The partially liq form means part and partly is the injectable essential part of solid for liquid.
In another embodiment, composition 5 expands or swelling when sclerosis.Composition 5 can be the composition of the inflatable or swellable of any kind of.Therefore described composition can be two parts glue, and wherein said part expands when mixed and hardens.In another embodiment, composition 5 is done the time spent and/or is expanded when standing the heat effect of fluid when the wet oil fluid that stands to ooze out from the stratum.In addition, composition 5 can be following type, does not promptly expand and only sclerosis when the heat effect of aqueous fluid that stands to ooze out from the stratum or fluid.At this moment, flow of oil is the emulsion that comprises oil and water.Therefore, composition 5 can be two parts polyurethane adhesive, and perhaps other can be with the polymer that is fit to of a kind of sclerosis in the said method.
In addition, composition 5 can be included in resin and the catalyzer that reacts under the pressure of composition sclerosis.Therefore, composition 5 reacts when being exposed to a certain pressure following time, and described pressure can just applied by injection tool 13 before the injection said composition.Alternatively, when composition was injected, described reaction can be from the high pressure in the well 22.
In another embodiment, described composition comprises the independently unit with ball, pearl or similar object form.Each unit all has the skin of compound, and the skin of this compound can make described unit be pasted together after injection, and therefore forms network, as shown in Figure 9.
Another kind of situation is shown in Figure 2, has wherein produced leakage portion 21 in sleeve pipe 2 down-holes.Sleeve pipe 2 is placed in the well 22, and therefore formation intermediate space 4 between the inboard of the lateral wall of sleeve pipe and well.In this case, sealing device 100 is inserted in the cavity 24 of leakage portion 21 outsides, composition 5 is injected into and passes leakage portion, so that the leakage portion in the Sealed casing pipe.
In addition, sealing device 100 can be used for by stopping up the bottom part that sleeve pipe 2 stops up well from sleeve pipe 2 inside and across the whole inner section of this sleeve pipe, as shown in Figure 4.Because sealing device 100 comprises net 30, so the obstruction of sleeve pipe 2 can highly be carried out rather than only locate by filling up sleeve pipe from the bottom in the bottom in the place in each of sleeve pipe.
In Fig. 5, net 30 can be made by the wire 28 or the wire rod of reeling, and described wire 28 or wire rod pile up each other by the circle with the silk 28 of each coiling and form coil or spiral wind spring is compressed in the instrument 13.Net 30 also can be made by silk, core, polymer line, glass wire or the similar elongated member that is wound onto during injecting in the network.
In another embodiment, net 30 is extensible grids 27, as shown in Figure 8, wherein first plait 29 intersects with second plait 29, plait is made the first plait adjacency that each first plait is all adjacent with other by twisting, the second plait adjacency that each second plait is all adjacent with other.Therefore, compressed grid 27 has the form of slender member, and the grid that is unfolded has the form of thin slice.In yet another embodiment, the grid form of net 30 for making by slit plate, this slit plate forms perforated plate when being unfolded.These nets 30 can be discharged from before the injection of composition 5, so that keep described composition and form sealing device 100.
The element that forms net 30 also can be comprised in the composition 5, and forms between the hardening period of said composition.In this case, net 30 was formed by the element that is pasted together between the hardening period of injected composition 5.Described element can be pearl or the form of bead 25, the perhaps fiber 36 as shown in Figure 7 or the form of line as shown in Figure 6.Shown in element can make by magnetic material, and described net is along with injection described composition and forming, injected element at first self is fastened on the sleeve pipe, and therefore sets up the net that stretches out from sleeve pipe.
Described net can be made by wire (28), polymer line, polymer fiber, carbon fiber, glass fiber, metal wire rod or the similar elongated member of wire, coiling.
In Fig. 2,5,6 and 7, injectable composition 5 makes it collide the inwall of well 22.For composition 5 being remained on the position of leakage portion 21 outsides in the sleeve pipe 2, net 30 is discharged with described composition.As mentioned above, the net shown in Fig. 5 30 also can be discharged from before the injection of composition 5.Gap between the outside of the leakage portion in the net 30 help bridge joint sleeve pipes 2 and the inwall of well 22.
In certain embodiments, composition 5 is a compound, and described compound comprises cement, polymer, synthetic rubber, natural rubber and/or siloxanes.When using rubber or siloxanes, compound was melted before by injection usually.Fusion process in injection tool 13, carry out or in instrument that compound is packed into before carry out.
Described polymer can be any suitable elastic body or thermoplastic polymer.Described elastic body can comprise acrylonitrile-butadiene rubber (NBR), hydrogenated nitrile-butadiene rubber (HNBR), XNBR (XNBR), silicon rubber, ternary ethylene-propylene copolymer (EPDM), fluoroelastomer (FKM, FEPM) and Perfluoroelastomer (FFKM) or other suitable polymers.Described thermoplastic polymer can comprise teflon (teflon), polyether-ether-ketone, polypropylene, polystyrene and polyphenylene sulfide or other suitable polymers.
In order to absorb the water in the emulsified fluid that oozes out from the stratum, polymer can comprise any water-soluble polymer that can absorb water, thereby can make the compound sclerosis.This water-soluble polymer can be methylcellulose, Cellacefate and HPMC polymer, poly-(oxirane) polymer, guar gum and derivative, polyacrylamide, polyvinylpyrrolidone, polyacrylic acid, polyvinylpyrrolidone, oligomeric maleate copolymer, oligomeric maleate oligomer, maleic acid allyl ester oligomers, silica-base material and fluorine silica-base material.
As described, be stored with two parts form and before the proper described compound of injection when mixed, described compound can comprise hardener or curing compound when described compound.In order to make component affixing together, described compound can comprise adhesive.Described adhesive also can be added in the composition 5, so that described compound is adhered on wire or other elongated member.The process of solidifying or hardening must carried out after the injectable composition 5 immediately, so that make the high-pressure fluid in the well not disturb the formation of sealing device 100 in the precalculated position, therefore can provide accelerator to described compound.
When using by metal the net of making 30, described net can be used to provide heat to compound---as wire 28, line, gauze wire cloth, wire gauze, knitmesh, grid, grid 27 or the aperture plate of reeling---, thereby quickens hardening process.The guiding electricity passes metal and is converted into heat, and this heat is sprayed into the compound once more from compound inside.
As described, composition 5 can comprise a plurality of independently unit, and each unit all has the core of being sealed by compound.Described compound can be identical with above-mentioned compound, and described unit is pasted together after being sprayed in the intermediate space, and therefore, described net is made by some independently unit, described independently unit was pasted together between the hardening period of compound, and therefore formed net.
In Fig. 9, described composition comprises a plurality of independently unit.Each unit all has the core 31 that is encapsulated in the intermediate material 32, and described intermediate material 32 is encapsulated in again in the skin 33 of compound.When described unit being sprayed into intermediate space with formation circumferential seal portion, described unit is pasted together to form sealing, and the composite layer of one of them unit pastes on the composite layer of another unit.In this embodiment, described compound when with the space in the water reaction thickness that the time becomes.
In one embodiment, described element, core or intermediate material are made with timber by pottery, metal, polymer, glass fiber, cellulose or paper pulp.
In another embodiment, each independently the core of unit make by magnetic material, this magnetic material makes independently that the unit is pasted together.Therefore, described unit will attract each other when by injection, and owing to be made of metal via its sleeve pipe of injecting described composition, so described unit also will adhere on the sleeve pipe.Like this, leakage portion is easy to sealed, and need not be full of whole intermediate space.
Each element has the extension of 0.1mm at least in a direction.
Described net is to be included in physical network in described compound or the composition as one or more independent parts.Described net also can be used as the independently unit that is pasted together and is formed in the described composition, as the network of interconnective unit.
Soluble net is the net of being made by the material that does not mix with multiple described compound or composition.Thereby described net forms in described composition or compound, and does not form chemical bond with described composition or compound.Therefore, described net forms independently net in described composition or compound.
In Fig. 3, the form of outwardly directed projection illustrates to bore a hole radially from each in the sealing of the perforation 3 of sleeve pipe 2; But sealing also can form circumferential seal portion.Described circumferential seal portion forms by the intermediate space that composition 5 is injected some perforation 3 and sprue bushing 2 exterior circumferential.All by forming via the hole injectable composition 5 along intersection location, wherein said intersection forms with the circumference of sleeve pipe is crossing by the plane that the longitudinal extension perpendicular to sleeve pipe 2 partly extends each sealing.Therefore, circumferential seal portion has around the outside of sleeve pipe 2 and is substantially perpendicular to the extension of the extension of sleeve pipe.Via its perforation 3 of injectable composition 5 can during the expansion process of described composition, be filled with composition.
The injection of composition 5 is carried out by injection tool 13 as shown in Figure 2.Injection tool 13 is dipped in the sleeve pipe 2, and injection terminal 16 is outwards moved through and shift out in perforation 3 or the leakage portion 21 some by the radial direction along sleeve pipe subsequently.
In addition, perforation 3 or leakage portion 21 may be too little concerning injection terminal 16, so that described composition can not be injected intermediate space, in this case, before injecting step can be carried out, perforation 3 or leakage portion 21 must be widened.This carries out by boring bar tool.
In one embodiment, injection tool 13 can be the part of a system, and this system also comprises boring bar tool, and described boring bar tool can be in expansion perforation 3 before the injecting step or boring in sleeve pipe 2.Boring bar tool also can be independently instrument, this independently instrument before injection tool 13, be dipped in the sleeve pipe 2, thereby independently carry out drilling operation and injection operation in the process at two.
If described instrument can not immerse in the sleeve pipe 2 always, then can use downhole tractor that this instrument is pushed in the interior position of well always.Downhole tool is can promote in the down-hole or the driven tool of any kind of of pulling instrument, as Well Tractor
Claims (18)
1. sealing device (100) that is used for the leakage portion (21) of Sealed casing pipe (2) or is used for shutoff production area (1), the described sleeve pipe that wherein has circumference and perforation (3) is arranged in well (2), but with the inwall of described well at a distance of certain distance, thereby form intermediate space (4) between the inwall of described sleeve pipe and described well, described sealing device (100) comprising:
-be used for being expelled to described intermediate space or be expelled in the leakage portion in the described sleeve pipe composition (5) and
-soluble net, this net is included in the described composition after injection, so that injected composition is fixed in the precalculated position.
2. sealing device according to claim 1 is characterized in that, described net is net grid, gauze wire cloth, wire gauze, mesh, knitmesh, grid, grid or aperture plate.
3. sealing device according to claim 1 and 2 is characterized in that, described net is discharged from before described composition or with described composition simultaneously.
4. according to each described sealing device among the claim 1-3, it is characterized in that, described net as elongated member, as rope or line as described in before the composition or with as described in composition be discharged from simultaneously, described elongated member forms described net grid, gauze wire cloth, wire gauze, knitmesh, grid, grid or aperture plate after discharging.
5. according to each described sealing device among the claim 1-3, it is characterized in that described net is made by wire (28), polymer line, polymer fiber, carbon fiber, glass fiber, wire or the similar elongated member of wire, coiling.
6. sealing device according to claim 1 is characterized in that described net is made by magnetic material.
7. sealing device according to claim 1 is characterized in that, described net is made by the element that is pasted together and forms thus mesh or net in described composition in described composition.
8. sealing device according to claim 7 is characterized in that each element is made by magnetic material.
9. sealing device (100) that is used for the leakage portion (21) of Sealed casing pipe (2) or is used for shutoff production area (1), the described sleeve pipe that wherein has circumference and perforation (3) is arranged in well (22), but with the inwall of described well at a distance of certain distance, thereby form intermediate space (4) between the inwall of described sleeve pipe and described well, described sealing device (100) comprising:
-be used for being expelled to described intermediate space or be expelled in the leakage portion in the described sleeve pipe composition (5) and
-unit in described composition, described unit is being pasted together and is forming thus mesh or net in described composition between the hardening period of described injected composition,
Wherein each described unit all has the core that is encapsulated in the compound.
10. sealing device according to claim 9 is characterized in that, each independently the unit all described core and described around compound between have an intermediate material.
11., it is characterized in that described core or described intermediate material are made by pottery, metal, polymer fiber, glass fiber or magnetic material that described independently unit is pasted together according to claim 9 or 10 described sealing devices.
12., it is characterized in that described composition comprises compound according to each described sealing device in the aforesaid right requirement.
13., it is characterized in that described compound comprises cement, polymer, synthetic rubber, natural rubber or siloxanes according to each described sealing device in the claim 9,10 or 12.
14., it is characterized in that described compound comprises curing compound, adhesive, hardener or accelerator according to each described sealing device in the claim 9,10,12 or 13.
15. the minimized encapsulating method of the open space between production casing and intermediate casing that is used for sealing leak portion or production area or is used to make packer (19) top, described encapsulating method may further comprise the steps:
-injection one composition (5),
-in described composition, form soluble net (30), so that the composition of described injection is fixed in the precalculated position.
16. encapsulating method according to claim 15 is characterized in that, described net is discharged before described injecting step or with described injecting step simultaneously, and is injected into when surrounding described net at least in part at described composition internal shaping when described composition.
17. 15 described encapsulating methods is characterized in that as requested, described net is formed by element or the unit that sclerosis or setting up period at described compound or described composition are pasted together in described composition.
18. a downhole tool, this downhole tool comprises a Room, and this chamber comprises according to each described sealing device among the claim 1-14.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08012547.9 | 2008-07-11 | ||
| EP08012547A EP2143874A1 (en) | 2008-07-11 | 2008-07-11 | Sealing arrangement and sealing method |
| PCT/EP2009/058842 WO2010004035A1 (en) | 2008-07-11 | 2009-07-10 | Sealing arrangement and sealing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102089494A true CN102089494A (en) | 2011-06-08 |
Family
ID=40097432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801272195A Pending CN102089494A (en) | 2008-07-11 | 2009-07-10 | Sealing arrangement and sealing method |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20110127727A1 (en) |
| EP (2) | EP2143874A1 (en) |
| CN (1) | CN102089494A (en) |
| AU (1) | AU2009267994B2 (en) |
| BR (1) | BRPI0915849A2 (en) |
| CA (1) | CA2725279A1 (en) |
| MX (1) | MX2010013232A (en) |
| WO (1) | WO2010004035A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2572254C1 (en) * | 2014-11-27 | 2016-01-10 | Общество с ограниченной ответственностью "Дельта-пром инновации" | Multifunctional composition for bottomhole formation zone treatment and isolation of water influx to well |
| CN106593315A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气集团公司 | Combined sleeve with sleeve-deformation-resistant function |
| CN113550712A (en) * | 2021-09-18 | 2021-10-26 | 德仕能源科技集团股份有限公司 | Natural gas well plugging treatment method |
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| GB0804566D0 (en) * | 2008-03-12 | 2008-04-16 | Brinker Technology Ltd | Method for sealing a leak in a vessel or duct |
| EP2143876A1 (en) * | 2008-07-11 | 2010-01-13 | Welltec A/S | Method for sealing off a water zone in a production well downhole and a sealing arrangement |
| DE102010026425B4 (en) * | 2010-07-07 | 2013-03-28 | Case Compounds B.V. | Method for sealing leaks in media-carrying constructions |
| RU2446270C1 (en) * | 2010-08-05 | 2012-03-27 | Общество с ограниченной ответственностью "Дельта-пром инновации" | Insulation method of formation water inflow in well and lining method of bottom-hole formation zone |
| US20120168161A1 (en) * | 2010-12-29 | 2012-07-05 | Baker Hughes Incorporated | Plug-inducing matter and method of plugging a wellbore |
| RU2474667C1 (en) * | 2012-04-19 | 2013-02-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Well construction method |
| NO335026B1 (en) | 2013-01-18 | 2014-08-25 | Anne Gerd Raffn | Procedure for Stabilizing Cavities in a Well |
| GB2535043B (en) * | 2013-12-19 | 2017-08-30 | Halliburton Energy Services Inc | Intervention tool for delivering self-assembling repair fluid |
| GB2522882A (en) * | 2014-02-07 | 2015-08-12 | Maersk Olie & Gas | Method, downhole system and fluid laden with particles to form a barrier or restriction in a wellbore flow channel |
| US10876378B2 (en) | 2015-06-30 | 2020-12-29 | Halliburton Energy Services, Inc. | Outflow control device for creating a packer |
| WO2017111640A1 (en) * | 2015-12-21 | 2017-06-29 | Schlumberger Technology Corporation | Pre-processed fiber flocks and methods of use thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2572254C1 (en) * | 2014-11-27 | 2016-01-10 | Общество с ограниченной ответственностью "Дельта-пром инновации" | Multifunctional composition for bottomhole formation zone treatment and isolation of water influx to well |
| CN106593315A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气集团公司 | Combined sleeve with sleeve-deformation-resistant function |
| CN106593315B (en) * | 2016-12-28 | 2019-02-15 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
| CN113550712A (en) * | 2021-09-18 | 2021-10-26 | 德仕能源科技集团股份有限公司 | Natural gas well plugging treatment method |
| CN113550712B (en) * | 2021-09-18 | 2022-01-11 | 德仕能源科技集团股份有限公司 | Natural gas well plugging treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0915849A2 (en) | 2015-11-03 |
| US20110127727A1 (en) | 2011-06-02 |
| EP2143874A1 (en) | 2010-01-13 |
| EP2315908A1 (en) | 2011-05-04 |
| CA2725279A1 (en) | 2010-01-14 |
| AU2009267994A1 (en) | 2010-01-14 |
| WO2010004035A1 (en) | 2010-01-14 |
| MX2010013232A (en) | 2011-01-21 |
| AU2009267994B2 (en) | 2012-07-19 |
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Application publication date: 20110608 |